Home / 13,145.95-18,141.67-7,177.63

Finding the Fourth Proportional to 13,145.95, 18,141.67 and 7,177.63

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Solution

The fourth proportional to 13,145.95, 18,141.67 and 7,177.63 is: 9,905.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,145.95 : 18,141.67 = 7,177.63 : x
  2. Step 2: Convert to fraction form
    13,145.95/18,141.67 = 7,177.63/x
  3. Step 3: Cross multiply
    13,145.95x = 18,141.67 × 7,177.63
  4. Step 4: Simplify right side
    13,145.95x = 130,214,194.84
  5. Step 5: Solve for x
    x = 130,214,194.84/13,145.95
  6. Step 6: Final answer
    x = 9,905.27

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.